Plate 2 
Toxicity Studies with Olcyanodlamlde on Plants 
A. —Growth of cowpeas on Chester loam receiving a constant quantity of sodium nitrate and varying 
quantities of dicyanodiamide. The applications are expressed as pounds NHi per acre. 1, no 
nitrogen; 2, sodium nitrate 40; 3, sodium nitrate 40, dicyanodiamide 5; 4, sodium nitrate 40, dicyano- 
diamide 10; 5, sodium nitrate 40, dicyanodiamide 20; 6, sodium nitrate 40, dicyanodiamide 40; 7, 
sodium nitrate 40, dicyanodiamide 80 , .. . _. 
B. —Growth of cowpeas on Chester loam receiving a constant quantity of dicyanodiamide and varying 
quantities of sodium nitrate. The applications are expressed as pounds NHi per acre. 1, no nitro¬ 
gen; 2, dicyanodiamide 40; 3, dicyanodiamide 40, sodium nitrate 6; 4, dicyanodiamide 40, sodium 
nitrate 10; 5, dicyanodiamide 40, sodium nitrate 20; 8, dicyanodiamide 40, sodium nitrate 40; 7, dicy¬ 
anodiamide 40, sodium nitrate 80 
19974—251-3 
